Q: After sending a manuscript withdrawal request, how long I should wait before sending my manuscript to another journal?

Detailed Question -

I have submitted a manuscript to a journal about four months back. The current status of my paper is still "Awaiting assignment", and for the editor part it says "Non Assigned".

I have emailed the journal many times in the last two months regarding the status of my manuscript. However, I have not received any reply. So, I sent a withdrawal request of my submission one week ago, also I didn't get any reply. What should I do if I don't receive any reply regarding my withdrawal of my submission? How long I should wait before sending my manuscript to another journal?

No answer yet